Siemens S5-135U/155U Manual De Usuario

5-33

System Manual
C79000-G8576-C199-06

All jumpers on the CPU 928B are required by the manufacturer for quality
testing. You must not change the jumper settings.

Switch off the power supply before removing or inserting the module.

Proceed as follows to insert the CPU in the central controller:

1

Release the upper locking bar of the central controller and ensure
that the locking pin for the module is correctly positioned with the
slot-head horizontal.

2

Select the correct slot (based on the labelling of the locking bar).
Insert the CPUs in the S5-135U/155U from slot 11.

3

Push the module evenly into the guide rail until the lever over the
locking pin is horizontal.

4

Press the locking pin inwards on the bottom of the module and
rotate it 90  clockwise.

5

Secure the upper locking bar.

If you install the CPU 928B -3UB21 as the replacement for a double-width
CPU 928 or 928B, you must cover the slot which has been freed up with a
blanking plate.

CPUs, Memory Cards, Memory Submodules, Interface Submodules